# Service bulletin B310719

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10171487
- Published by NHTSA: 2020\-02\-18
- Manufacturer's number: B310719
- Manufacturer's date: 2020\-01\-01
- NHTSA component: POWER TRAIN:AXLE ASSEMBLY

## NHTSA's summary

SERVICE ACTION: APPLY CAVITY WAX PROTECTION INSIDE THE FRONT AXLE SUPPORT: The corrosion protection applied to the inside of the front axle support during the manufacturing process may have minor coating defects. In individual cases this can lead to localized rust damage on the front axle support over the service life of the vehicle. Manufacturing process error.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10171487-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10171487-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline, Axle

## Vehicles listed

- 2019 to 2020 BMW 330I
- 2020 BMW M340I

JSON: [/v1/bulletins/10171487](/v1/bulletins/10171487)

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